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Merge tag 'mm-hotfixes-stable-2025-07-11-16-16' of git://git.kernel.org/pub/scm/linux...
[linux-2.6-block.git] / net / wireless / mlme.c
... / ...
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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * cfg80211 MLME SAP interface
4 *
5 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
6 * Copyright (c) 2015 Intel Deutschland GmbH
7 * Copyright (C) 2019-2020, 2022-2025 Intel Corporation
8 */
9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/etherdevice.h>
13#include <linux/netdevice.h>
14#include <linux/nl80211.h>
15#include <linux/slab.h>
16#include <linux/wireless.h>
17#include <net/cfg80211.h>
18#include <net/iw_handler.h>
19#include "core.h"
20#include "nl80211.h"
21#include "rdev-ops.h"
22
23
24void cfg80211_rx_assoc_resp(struct net_device *dev,
25 const struct cfg80211_rx_assoc_resp_data *data)
26{
27 struct wireless_dev *wdev = dev->ieee80211_ptr;
28 struct wiphy *wiphy = wdev->wiphy;
29 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
30 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)data->buf;
31 struct cfg80211_connect_resp_params cr = {
32 .timeout_reason = NL80211_TIMEOUT_UNSPECIFIED,
33 .req_ie = data->req_ies,
34 .req_ie_len = data->req_ies_len,
35 .resp_ie = mgmt->u.assoc_resp.variable,
36 .resp_ie_len = data->len -
37 offsetof(struct ieee80211_mgmt,
38 u.assoc_resp.variable),
39 .status = le16_to_cpu(mgmt->u.assoc_resp.status_code),
40 .ap_mld_addr = data->ap_mld_addr,
41 };
42 unsigned int link_id;
43
44 for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
45 cr.links[link_id].status = data->links[link_id].status;
46 cr.links[link_id].bss = data->links[link_id].bss;
47
48 WARN_ON_ONCE(cr.links[link_id].status != WLAN_STATUS_SUCCESS &&
49 (!cr.ap_mld_addr || !cr.links[link_id].bss));
50
51 if (!cr.links[link_id].bss)
52 continue;
53 cr.links[link_id].bssid = data->links[link_id].bss->bssid;
54 cr.links[link_id].addr = data->links[link_id].addr;
55 /* need to have local link addresses for MLO connections */
56 WARN_ON(cr.ap_mld_addr &&
57 !is_valid_ether_addr(cr.links[link_id].addr));
58
59 BUG_ON(!cr.links[link_id].bss->channel);
60
61 if (cr.links[link_id].bss->channel->band == NL80211_BAND_S1GHZ) {
62 WARN_ON(link_id);
63 cr.resp_ie = (u8 *)&mgmt->u.s1g_assoc_resp.variable;
64 cr.resp_ie_len = data->len -
65 offsetof(struct ieee80211_mgmt,
66 u.s1g_assoc_resp.variable);
67 }
68
69 if (cr.ap_mld_addr)
70 cr.valid_links |= BIT(link_id);
71 }
72
73 trace_cfg80211_send_rx_assoc(dev, data);
74
75 /*
76 * This is a bit of a hack, we don't notify userspace of
77 * a (re-)association reply if we tried to send a reassoc
78 * and got a reject -- we only try again with an assoc
79 * frame instead of reassoc.
80 */
81 if (cfg80211_sme_rx_assoc_resp(wdev, cr.status)) {
82 for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
83 struct cfg80211_bss *bss = data->links[link_id].bss;
84
85 if (!bss)
86 continue;
87
88 cfg80211_unhold_bss(bss_from_pub(bss));
89 cfg80211_put_bss(wiphy, bss);
90 }
91 return;
92 }
93
94 nl80211_send_rx_assoc(rdev, dev, data);
95 /* update current_bss etc., consumes the bss reference */
96 __cfg80211_connect_result(dev, &cr, cr.status == WLAN_STATUS_SUCCESS);
97}
98EXPORT_SYMBOL(cfg80211_rx_assoc_resp);
99
100static void cfg80211_process_auth(struct wireless_dev *wdev,
101 const u8 *buf, size_t len)
102{
103 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
104
105 nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL);
106 cfg80211_sme_rx_auth(wdev, buf, len);
107}
108
109static void cfg80211_process_deauth(struct wireless_dev *wdev,
110 const u8 *buf, size_t len,
111 bool reconnect)
112{
113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
114 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
115 const u8 *bssid = mgmt->bssid;
116 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
117 bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
118
119 nl80211_send_deauth(rdev, wdev->netdev, buf, len, reconnect, GFP_KERNEL);
120
121 if (!wdev->connected || !ether_addr_equal(wdev->u.client.connected_addr, bssid))
122 return;
123
124 __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
125 cfg80211_sme_deauth(wdev);
126}
127
128static void cfg80211_process_disassoc(struct wireless_dev *wdev,
129 const u8 *buf, size_t len,
130 bool reconnect)
131{
132 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
133 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
134 const u8 *bssid = mgmt->bssid;
135 u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
136 bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr);
137
138 nl80211_send_disassoc(rdev, wdev->netdev, buf, len, reconnect,
139 GFP_KERNEL);
140
141 if (WARN_ON(!wdev->connected ||
142 !ether_addr_equal(wdev->u.client.connected_addr, bssid)))
143 return;
144
145 __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap);
146 cfg80211_sme_disassoc(wdev);
147}
148
149void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
150{
151 struct wireless_dev *wdev = dev->ieee80211_ptr;
152 struct ieee80211_mgmt *mgmt = (void *)buf;
153
154 lockdep_assert_wiphy(wdev->wiphy);
155
156 trace_cfg80211_rx_mlme_mgmt(dev, buf, len);
157
158 if (WARN_ON(len < 2))
159 return;
160
161 if (ieee80211_is_auth(mgmt->frame_control))
162 cfg80211_process_auth(wdev, buf, len);
163 else if (ieee80211_is_deauth(mgmt->frame_control))
164 cfg80211_process_deauth(wdev, buf, len, false);
165 else if (ieee80211_is_disassoc(mgmt->frame_control))
166 cfg80211_process_disassoc(wdev, buf, len, false);
167}
168EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt);
169
170void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr)
171{
172 struct wireless_dev *wdev = dev->ieee80211_ptr;
173 struct wiphy *wiphy = wdev->wiphy;
174 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
175
176 trace_cfg80211_send_auth_timeout(dev, addr);
177
178 nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL);
179 cfg80211_sme_auth_timeout(wdev);
180}
181EXPORT_SYMBOL(cfg80211_auth_timeout);
182
183void cfg80211_assoc_failure(struct net_device *dev,
184 struct cfg80211_assoc_failure *data)
185{
186 struct wireless_dev *wdev = dev->ieee80211_ptr;
187 struct wiphy *wiphy = wdev->wiphy;
188 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
189 const u8 *addr = data->ap_mld_addr ?: data->bss[0]->bssid;
190 int i;
191
192 trace_cfg80211_send_assoc_failure(dev, data);
193
194 if (data->timeout) {
195 nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL);
196 cfg80211_sme_assoc_timeout(wdev);
197 } else {
198 cfg80211_sme_abandon_assoc(wdev);
199 }
200
201 for (i = 0; i < ARRAY_SIZE(data->bss); i++) {
202 struct cfg80211_bss *bss = data->bss[i];
203
204 if (!bss)
205 continue;
206
207 cfg80211_unhold_bss(bss_from_pub(bss));
208 cfg80211_put_bss(wiphy, bss);
209 }
210}
211EXPORT_SYMBOL(cfg80211_assoc_failure);
212
213void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len,
214 bool reconnect)
215{
216 struct wireless_dev *wdev = dev->ieee80211_ptr;
217 struct ieee80211_mgmt *mgmt = (void *)buf;
218
219 lockdep_assert_wiphy(wdev->wiphy);
220
221 trace_cfg80211_tx_mlme_mgmt(dev, buf, len, reconnect);
222
223 if (WARN_ON(len < 2))
224 return;
225
226 if (ieee80211_is_deauth(mgmt->frame_control))
227 cfg80211_process_deauth(wdev, buf, len, reconnect);
228 else
229 cfg80211_process_disassoc(wdev, buf, len, reconnect);
230}
231EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt);
232
233void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr,
234 enum nl80211_key_type key_type, int key_id,
235 const u8 *tsc, gfp_t gfp)
236{
237 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
238 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
239#ifdef CONFIG_CFG80211_WEXT
240 union iwreq_data wrqu;
241 char *buf = kmalloc(128, gfp);
242
243 if (buf) {
244 memset(&wrqu, 0, sizeof(wrqu));
245 wrqu.data.length =
246 sprintf(buf, "MLME-MICHAELMICFAILURE."
247 "indication(keyid=%d %scast addr=%pM)",
248 key_id, key_type == NL80211_KEYTYPE_GROUP
249 ? "broad" : "uni", addr);
250 wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
251 kfree(buf);
252 }
253#endif
254
255 trace_cfg80211_michael_mic_failure(dev, addr, key_type, key_id, tsc);
256 nl80211_michael_mic_failure(rdev, dev, addr, key_type, key_id, tsc, gfp);
257}
258EXPORT_SYMBOL(cfg80211_michael_mic_failure);
259
260/* some MLME handling for userspace SME */
261int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
262 struct net_device *dev,
263 struct cfg80211_auth_request *req)
264{
265 struct wireless_dev *wdev = dev->ieee80211_ptr;
266
267 lockdep_assert_wiphy(wdev->wiphy);
268
269 if (!req->bss)
270 return -ENOENT;
271
272 if (req->link_id >= 0 &&
273 !(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
274 return -EINVAL;
275
276 if (req->auth_type == NL80211_AUTHTYPE_SHARED_KEY) {
277 if (!req->key || !req->key_len ||
278 req->key_idx < 0 || req->key_idx > 3)
279 return -EINVAL;
280 }
281
282 if (wdev->connected &&
283 ether_addr_equal(req->bss->bssid, wdev->u.client.connected_addr))
284 return -EALREADY;
285
286 if (ether_addr_equal(req->bss->bssid, dev->dev_addr) ||
287 (req->link_id >= 0 &&
288 ether_addr_equal(req->ap_mld_addr, dev->dev_addr)))
289 return -EINVAL;
290
291 return rdev_auth(rdev, dev, req);
292}
293
294/* Do a logical ht_capa &= ht_capa_mask. */
295void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
296 const struct ieee80211_ht_cap *ht_capa_mask)
297{
298 int i;
299 u8 *p1, *p2;
300 if (!ht_capa_mask) {
301 memset(ht_capa, 0, sizeof(*ht_capa));
302 return;
303 }
304
305 p1 = (u8*)(ht_capa);
306 p2 = (u8*)(ht_capa_mask);
307 for (i = 0; i < sizeof(*ht_capa); i++)
308 p1[i] &= p2[i];
309}
310
311/* Do a logical vht_capa &= vht_capa_mask. */
312void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
313 const struct ieee80211_vht_cap *vht_capa_mask)
314{
315 int i;
316 u8 *p1, *p2;
317 if (!vht_capa_mask) {
318 memset(vht_capa, 0, sizeof(*vht_capa));
319 return;
320 }
321
322 p1 = (u8*)(vht_capa);
323 p2 = (u8*)(vht_capa_mask);
324 for (i = 0; i < sizeof(*vht_capa); i++)
325 p1[i] &= p2[i];
326}
327
328static int
329cfg80211_mlme_check_mlo_compat(const struct ieee80211_multi_link_elem *mle_a,
330 const struct ieee80211_multi_link_elem *mle_b,
331 struct netlink_ext_ack *extack)
332{
333 const struct ieee80211_mle_basic_common_info *common_a, *common_b;
334
335 common_a = (const void *)mle_a->variable;
336 common_b = (const void *)mle_b->variable;
337
338 if (memcmp(common_a->mld_mac_addr, common_b->mld_mac_addr, ETH_ALEN)) {
339 NL_SET_ERR_MSG(extack, "AP MLD address mismatch");
340 return -EINVAL;
341 }
342
343 if (ieee80211_mle_get_eml_cap((const u8 *)mle_a) !=
344 ieee80211_mle_get_eml_cap((const u8 *)mle_b)) {
345 NL_SET_ERR_MSG(extack, "link EML capabilities mismatch");
346 return -EINVAL;
347 }
348
349 if (ieee80211_mle_get_mld_capa_op((const u8 *)mle_a) !=
350 ieee80211_mle_get_mld_capa_op((const u8 *)mle_b)) {
351 NL_SET_ERR_MSG(extack, "link MLD capabilities/ops mismatch");
352 return -EINVAL;
353 }
354
355 if (ieee80211_mle_get_ext_mld_capa_op((const u8 *)mle_a) !=
356 ieee80211_mle_get_ext_mld_capa_op((const u8 *)mle_b)) {
357 NL_SET_ERR_MSG(extack,
358 "extended link MLD capabilities/ops mismatch");
359 return -EINVAL;
360 }
361
362 return 0;
363}
364
365static int cfg80211_mlme_check_mlo(struct net_device *dev,
366 struct cfg80211_assoc_request *req,
367 struct netlink_ext_ack *extack)
368{
369 const struct ieee80211_multi_link_elem *mles[ARRAY_SIZE(req->links)] = {};
370 int i;
371
372 if (req->link_id < 0)
373 return 0;
374
375 if (!req->links[req->link_id].bss) {
376 NL_SET_ERR_MSG(extack, "no BSS for assoc link");
377 return -EINVAL;
378 }
379
380 rcu_read_lock();
381 for (i = 0; i < ARRAY_SIZE(req->links); i++) {
382 const struct cfg80211_bss_ies *ies;
383 const struct element *ml;
384
385 if (!req->links[i].bss)
386 continue;
387
388 if (ether_addr_equal(req->links[i].bss->bssid, dev->dev_addr)) {
389 NL_SET_ERR_MSG(extack, "BSSID must not be our address");
390 req->links[i].error = -EINVAL;
391 goto error;
392 }
393
394 ies = rcu_dereference(req->links[i].bss->ies);
395 ml = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_MULTI_LINK,
396 ies->data, ies->len);
397 if (!ml) {
398 NL_SET_ERR_MSG(extack, "MLO BSS w/o ML element");
399 req->links[i].error = -EINVAL;
400 goto error;
401 }
402
403 if (!ieee80211_mle_type_ok(ml->data + 1,
404 IEEE80211_ML_CONTROL_TYPE_BASIC,
405 ml->datalen - 1)) {
406 NL_SET_ERR_MSG(extack, "BSS with invalid ML element");
407 req->links[i].error = -EINVAL;
408 goto error;
409 }
410
411 mles[i] = (const void *)(ml->data + 1);
412
413 if (ieee80211_mle_get_link_id((const u8 *)mles[i]) != i) {
414 NL_SET_ERR_MSG(extack, "link ID mismatch");
415 req->links[i].error = -EINVAL;
416 goto error;
417 }
418 }
419
420 if (WARN_ON(!mles[req->link_id]))
421 goto error;
422
423 for (i = 0; i < ARRAY_SIZE(req->links); i++) {
424 if (i == req->link_id || !req->links[i].bss)
425 continue;
426
427 if (WARN_ON(!mles[i]))
428 goto error;
429
430 if (cfg80211_mlme_check_mlo_compat(mles[req->link_id], mles[i],
431 extack)) {
432 req->links[i].error = -EINVAL;
433 goto error;
434 }
435 }
436
437 rcu_read_unlock();
438 return 0;
439error:
440 rcu_read_unlock();
441 return -EINVAL;
442}
443
444/* Note: caller must cfg80211_put_bss() regardless of result */
445int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
446 struct net_device *dev,
447 struct cfg80211_assoc_request *req,
448 struct netlink_ext_ack *extack)
449{
450 struct wireless_dev *wdev = dev->ieee80211_ptr;
451 int err;
452
453 lockdep_assert_wiphy(wdev->wiphy);
454
455 err = cfg80211_mlme_check_mlo(dev, req, extack);
456 if (err)
457 return err;
458
459 if (wdev->connected &&
460 (!req->prev_bssid ||
461 !ether_addr_equal(wdev->u.client.connected_addr, req->prev_bssid)))
462 return -EALREADY;
463
464 if ((req->bss && ether_addr_equal(req->bss->bssid, dev->dev_addr)) ||
465 (req->link_id >= 0 &&
466 ether_addr_equal(req->ap_mld_addr, dev->dev_addr)))
467 return -EINVAL;
468
469 cfg80211_oper_and_ht_capa(&req->ht_capa_mask,
470 rdev->wiphy.ht_capa_mod_mask);
471 cfg80211_oper_and_vht_capa(&req->vht_capa_mask,
472 rdev->wiphy.vht_capa_mod_mask);
473
474 err = rdev_assoc(rdev, dev, req);
475 if (!err) {
476 int link_id;
477
478 if (req->bss) {
479 cfg80211_ref_bss(&rdev->wiphy, req->bss);
480 cfg80211_hold_bss(bss_from_pub(req->bss));
481 }
482
483 for (link_id = 0; link_id < ARRAY_SIZE(req->links); link_id++) {
484 if (!req->links[link_id].bss)
485 continue;
486 cfg80211_ref_bss(&rdev->wiphy, req->links[link_id].bss);
487 cfg80211_hold_bss(bss_from_pub(req->links[link_id].bss));
488 }
489 }
490 return err;
491}
492
493int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
494 struct net_device *dev, const u8 *bssid,
495 const u8 *ie, int ie_len, u16 reason,
496 bool local_state_change)
497{
498 struct wireless_dev *wdev = dev->ieee80211_ptr;
499 struct cfg80211_deauth_request req = {
500 .bssid = bssid,
501 .reason_code = reason,
502 .ie = ie,
503 .ie_len = ie_len,
504 .local_state_change = local_state_change,
505 };
506
507 lockdep_assert_wiphy(wdev->wiphy);
508
509 if (local_state_change &&
510 (!wdev->connected ||
511 !ether_addr_equal(wdev->u.client.connected_addr, bssid)))
512 return 0;
513
514 if (ether_addr_equal(wdev->disconnect_bssid, bssid) ||
515 (wdev->connected &&
516 ether_addr_equal(wdev->u.client.connected_addr, bssid)))
517 wdev->conn_owner_nlportid = 0;
518
519 return rdev_deauth(rdev, dev, &req);
520}
521
522int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
523 struct net_device *dev, const u8 *ap_addr,
524 const u8 *ie, int ie_len, u16 reason,
525 bool local_state_change)
526{
527 struct wireless_dev *wdev = dev->ieee80211_ptr;
528 struct cfg80211_disassoc_request req = {
529 .reason_code = reason,
530 .local_state_change = local_state_change,
531 .ie = ie,
532 .ie_len = ie_len,
533 .ap_addr = ap_addr,
534 };
535 int err;
536
537 lockdep_assert_wiphy(wdev->wiphy);
538
539 if (!wdev->connected)
540 return -ENOTCONN;
541
542 if (memcmp(wdev->u.client.connected_addr, ap_addr, ETH_ALEN))
543 return -ENOTCONN;
544
545 err = rdev_disassoc(rdev, dev, &req);
546 if (err)
547 return err;
548
549 /* driver should have reported the disassoc */
550 WARN_ON(wdev->connected);
551 return 0;
552}
553
554void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
555 struct net_device *dev)
556{
557 struct wireless_dev *wdev = dev->ieee80211_ptr;
558 u8 bssid[ETH_ALEN];
559
560 lockdep_assert_wiphy(wdev->wiphy);
561
562 if (!rdev->ops->deauth)
563 return;
564
565 if (!wdev->connected)
566 return;
567
568 memcpy(bssid, wdev->u.client.connected_addr, ETH_ALEN);
569 cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
570 WLAN_REASON_DEAUTH_LEAVING, false);
571}
572
573struct cfg80211_mgmt_registration {
574 struct list_head list;
575 struct wireless_dev *wdev;
576
577 u32 nlportid;
578
579 int match_len;
580
581 __le16 frame_type;
582
583 bool multicast_rx;
584
585 u8 match[];
586};
587
588static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
589{
590 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
591 struct wireless_dev *tmp;
592 struct cfg80211_mgmt_registration *reg;
593 struct mgmt_frame_regs upd = {};
594
595 lockdep_assert_held(&rdev->wiphy.mtx);
596
597 spin_lock_bh(&rdev->mgmt_registrations_lock);
598 if (!wdev->mgmt_registrations_need_update) {
599 spin_unlock_bh(&rdev->mgmt_registrations_lock);
600 return;
601 }
602
603 rcu_read_lock();
604 list_for_each_entry_rcu(tmp, &rdev->wiphy.wdev_list, list) {
605 list_for_each_entry(reg, &tmp->mgmt_registrations, list) {
606 u32 mask = BIT(le16_to_cpu(reg->frame_type) >> 4);
607 u32 mcast_mask = 0;
608
609 if (reg->multicast_rx)
610 mcast_mask = mask;
611
612 upd.global_stypes |= mask;
613 upd.global_mcast_stypes |= mcast_mask;
614
615 if (tmp == wdev) {
616 upd.interface_stypes |= mask;
617 upd.interface_mcast_stypes |= mcast_mask;
618 }
619 }
620 }
621 rcu_read_unlock();
622
623 wdev->mgmt_registrations_need_update = 0;
624 spin_unlock_bh(&rdev->mgmt_registrations_lock);
625
626 rdev_update_mgmt_frame_registrations(rdev, wdev, &upd);
627}
628
629void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk)
630{
631 struct cfg80211_registered_device *rdev;
632 struct wireless_dev *wdev;
633
634 rdev = container_of(wk, struct cfg80211_registered_device,
635 mgmt_registrations_update_wk);
636
637 guard(wiphy)(&rdev->wiphy);
638
639 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
640 cfg80211_mgmt_registrations_update(wdev);
641}
642
643int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
644 u16 frame_type, const u8 *match_data,
645 int match_len, bool multicast_rx,
646 struct netlink_ext_ack *extack)
647{
648 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
649 struct cfg80211_mgmt_registration *reg, *nreg;
650 int err = 0;
651 u16 mgmt_type;
652 bool update_multicast = false;
653
654 if (!wdev->wiphy->mgmt_stypes)
655 return -EOPNOTSUPP;
656
657 if ((frame_type & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) {
658 NL_SET_ERR_MSG(extack, "frame type not management");
659 return -EINVAL;
660 }
661
662 if (frame_type & ~(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) {
663 NL_SET_ERR_MSG(extack, "Invalid frame type");
664 return -EINVAL;
665 }
666
667 mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4;
668 if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].rx & BIT(mgmt_type))) {
669 NL_SET_ERR_MSG(extack,
670 "Registration to specific type not supported");
671 return -EINVAL;
672 }
673
674 /*
675 * To support Pre Association Security Negotiation (PASN), registration
676 * for authentication frames should be supported. However, as some
677 * versions of the user space daemons wrongly register to all types of
678 * authentication frames (which might result in unexpected behavior)
679 * allow such registration if the request is for a specific
680 * authentication algorithm number.
681 */
682 if (wdev->iftype == NL80211_IFTYPE_STATION &&
683 (frame_type & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_AUTH &&
684 !(match_data && match_len >= 2)) {
685 NL_SET_ERR_MSG(extack,
686 "Authentication algorithm number required");
687 return -EINVAL;
688 }
689
690 nreg = kzalloc(sizeof(*reg) + match_len, GFP_KERNEL);
691 if (!nreg)
692 return -ENOMEM;
693
694 spin_lock_bh(&rdev->mgmt_registrations_lock);
695
696 list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
697 int mlen = min(match_len, reg->match_len);
698
699 if (frame_type != le16_to_cpu(reg->frame_type))
700 continue;
701
702 if (memcmp(reg->match, match_data, mlen) == 0) {
703 if (reg->multicast_rx != multicast_rx) {
704 update_multicast = true;
705 reg->multicast_rx = multicast_rx;
706 break;
707 }
708 NL_SET_ERR_MSG(extack, "Match already configured");
709 err = -EALREADY;
710 break;
711 }
712 }
713
714 if (err)
715 goto out;
716
717 if (update_multicast) {
718 kfree(nreg);
719 } else {
720 memcpy(nreg->match, match_data, match_len);
721 nreg->match_len = match_len;
722 nreg->nlportid = snd_portid;
723 nreg->frame_type = cpu_to_le16(frame_type);
724 nreg->wdev = wdev;
725 nreg->multicast_rx = multicast_rx;
726 list_add(&nreg->list, &wdev->mgmt_registrations);
727 }
728 wdev->mgmt_registrations_need_update = 1;
729 spin_unlock_bh(&rdev->mgmt_registrations_lock);
730
731 cfg80211_mgmt_registrations_update(wdev);
732
733 return 0;
734
735 out:
736 kfree(nreg);
737 spin_unlock_bh(&rdev->mgmt_registrations_lock);
738
739 return err;
740}
741
742void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
743{
744 struct wiphy *wiphy = wdev->wiphy;
745 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
746 struct cfg80211_mgmt_registration *reg, *tmp;
747
748 spin_lock_bh(&rdev->mgmt_registrations_lock);
749
750 list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
751 if (reg->nlportid != nlportid)
752 continue;
753
754 list_del(&reg->list);
755 kfree(reg);
756
757 wdev->mgmt_registrations_need_update = 1;
758 schedule_work(&rdev->mgmt_registrations_update_wk);
759 }
760
761 spin_unlock_bh(&rdev->mgmt_registrations_lock);
762
763 if (nlportid && rdev->crit_proto_nlportid == nlportid) {
764 rdev->crit_proto_nlportid = 0;
765 rdev_crit_proto_stop(rdev, wdev);
766 }
767
768 if (nlportid == wdev->ap_unexpected_nlportid)
769 wdev->ap_unexpected_nlportid = 0;
770}
771
772void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
773{
774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
775 struct cfg80211_mgmt_registration *reg, *tmp;
776
777 spin_lock_bh(&rdev->mgmt_registrations_lock);
778 list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
779 list_del(&reg->list);
780 kfree(reg);
781 }
782 wdev->mgmt_registrations_need_update = 1;
783 spin_unlock_bh(&rdev->mgmt_registrations_lock);
784
785 cfg80211_mgmt_registrations_update(wdev);
786}
787
788static bool cfg80211_allowed_address(struct wireless_dev *wdev, const u8 *addr)
789{
790 int i;
791
792 for_each_valid_link(wdev, i) {
793 if (ether_addr_equal(addr, wdev->links[i].addr))
794 return true;
795 }
796
797 return ether_addr_equal(addr, wdev_address(wdev));
798}
799
800static bool cfg80211_allowed_random_address(struct wireless_dev *wdev,
801 const struct ieee80211_mgmt *mgmt)
802{
803 if (ieee80211_is_auth(mgmt->frame_control) ||
804 ieee80211_is_deauth(mgmt->frame_control)) {
805 /* Allow random TA to be used with authentication and
806 * deauthentication frames if the driver has indicated support.
807 */
808 if (wiphy_ext_feature_isset(
809 wdev->wiphy,
810 NL80211_EXT_FEATURE_AUTH_AND_DEAUTH_RANDOM_TA))
811 return true;
812 } else if (ieee80211_is_action(mgmt->frame_control) &&
813 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
814 /* Allow random TA to be used with Public Action frames if the
815 * driver has indicated support.
816 */
817 if (!wdev->connected &&
818 wiphy_ext_feature_isset(
819 wdev->wiphy,
820 NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA))
821 return true;
822
823 if (wdev->connected &&
824 wiphy_ext_feature_isset(
825 wdev->wiphy,
826 NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED))
827 return true;
828 }
829
830 return false;
831}
832
833int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
834 struct wireless_dev *wdev,
835 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
836{
837 const struct ieee80211_mgmt *mgmt;
838 u16 stype;
839
840 lockdep_assert_wiphy(&rdev->wiphy);
841
842 if (!wdev->wiphy->mgmt_stypes)
843 return -EOPNOTSUPP;
844
845 if (!rdev->ops->mgmt_tx)
846 return -EOPNOTSUPP;
847
848 if (params->len < 24 + 1)
849 return -EINVAL;
850
851 mgmt = (const struct ieee80211_mgmt *)params->buf;
852
853 if (!ieee80211_is_mgmt(mgmt->frame_control))
854 return -EINVAL;
855
856 stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
857 if (!(wdev->wiphy->mgmt_stypes[wdev->iftype].tx & BIT(stype >> 4)))
858 return -EINVAL;
859
860 if (ieee80211_is_action(mgmt->frame_control) &&
861 mgmt->u.action.category != WLAN_CATEGORY_PUBLIC) {
862 int err = 0;
863
864 switch (wdev->iftype) {
865 case NL80211_IFTYPE_ADHOC:
866 /*
867 * check for IBSS DA must be done by driver as
868 * cfg80211 doesn't track the stations
869 */
870 if (!wdev->u.ibss.current_bss ||
871 !ether_addr_equal(wdev->u.ibss.current_bss->pub.bssid,
872 mgmt->bssid)) {
873 err = -ENOTCONN;
874 break;
875 }
876 break;
877 case NL80211_IFTYPE_STATION:
878 case NL80211_IFTYPE_P2P_CLIENT:
879 if (!wdev->connected) {
880 err = -ENOTCONN;
881 break;
882 }
883
884 /* FIXME: MLD may address this differently */
885
886 if (!ether_addr_equal(wdev->u.client.connected_addr,
887 mgmt->bssid)) {
888 err = -ENOTCONN;
889 break;
890 }
891
892 /* for station, check that DA is the AP */
893 if (!ether_addr_equal(wdev->u.client.connected_addr,
894 mgmt->da)) {
895 err = -ENOTCONN;
896 break;
897 }
898 break;
899 case NL80211_IFTYPE_AP:
900 case NL80211_IFTYPE_P2P_GO:
901 case NL80211_IFTYPE_AP_VLAN:
902 if (!ether_addr_equal(mgmt->bssid, wdev_address(wdev)) &&
903 (params->link_id < 0 ||
904 !ether_addr_equal(mgmt->bssid,
905 wdev->links[params->link_id].addr)))
906 err = -EINVAL;
907 break;
908 case NL80211_IFTYPE_MESH_POINT:
909 if (!ether_addr_equal(mgmt->sa, mgmt->bssid)) {
910 err = -EINVAL;
911 break;
912 }
913 /*
914 * check for mesh DA must be done by driver as
915 * cfg80211 doesn't track the stations
916 */
917 break;
918 case NL80211_IFTYPE_P2P_DEVICE:
919 /*
920 * fall through, P2P device only supports
921 * public action frames
922 */
923 case NL80211_IFTYPE_NAN:
924 default:
925 err = -EOPNOTSUPP;
926 break;
927 }
928
929 if (err)
930 return err;
931 }
932
933 if (!cfg80211_allowed_address(wdev, mgmt->sa) &&
934 !cfg80211_allowed_random_address(wdev, mgmt))
935 return -EINVAL;
936
937 /* Transmit the management frame as requested by user space */
938 return rdev_mgmt_tx(rdev, wdev, params, cookie);
939}
940
941bool cfg80211_rx_mgmt_ext(struct wireless_dev *wdev,
942 struct cfg80211_rx_info *info)
943{
944 struct wiphy *wiphy = wdev->wiphy;
945 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
946 struct cfg80211_mgmt_registration *reg;
947 const struct ieee80211_txrx_stypes *stypes =
948 &wiphy->mgmt_stypes[wdev->iftype];
949 struct ieee80211_mgmt *mgmt = (void *)info->buf;
950 const u8 *data;
951 int data_len;
952 bool result = false;
953 __le16 ftype = mgmt->frame_control &
954 cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE);
955 u16 stype;
956
957 trace_cfg80211_rx_mgmt(wdev, info);
958 stype = (le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE) >> 4;
959
960 if (!(stypes->rx & BIT(stype))) {
961 trace_cfg80211_return_bool(false);
962 return false;
963 }
964
965 data = info->buf + ieee80211_hdrlen(mgmt->frame_control);
966 data_len = info->len - ieee80211_hdrlen(mgmt->frame_control);
967
968 spin_lock_bh(&rdev->mgmt_registrations_lock);
969
970 list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
971 if (reg->frame_type != ftype)
972 continue;
973
974 if (reg->match_len > data_len)
975 continue;
976
977 if (memcmp(reg->match, data, reg->match_len))
978 continue;
979
980 /* found match! */
981
982 /* Indicate the received Action frame to user space */
983 if (nl80211_send_mgmt(rdev, wdev, reg->nlportid, info,
984 GFP_ATOMIC))
985 continue;
986
987 result = true;
988 break;
989 }
990
991 spin_unlock_bh(&rdev->mgmt_registrations_lock);
992
993 trace_cfg80211_return_bool(result);
994 return result;
995}
996EXPORT_SYMBOL(cfg80211_rx_mgmt_ext);
997
998void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev)
999{
1000 cancel_delayed_work(&rdev->dfs_update_channels_wk);
1001 queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk, 0);
1002}
1003
1004void cfg80211_dfs_channels_update_work(struct work_struct *work)
1005{
1006 struct delayed_work *delayed_work = to_delayed_work(work);
1007 struct cfg80211_registered_device *rdev;
1008 struct cfg80211_chan_def chandef;
1009 struct ieee80211_supported_band *sband;
1010 struct ieee80211_channel *c;
1011 struct wiphy *wiphy;
1012 bool check_again = false;
1013 unsigned long timeout, next_time = 0;
1014 unsigned long time_dfs_update;
1015 enum nl80211_radar_event radar_event;
1016 int bandid, i;
1017
1018 rdev = container_of(delayed_work, struct cfg80211_registered_device,
1019 dfs_update_channels_wk);
1020 wiphy = &rdev->wiphy;
1021
1022 rtnl_lock();
1023 for (bandid = 0; bandid < NUM_NL80211_BANDS; bandid++) {
1024 sband = wiphy->bands[bandid];
1025 if (!sband)
1026 continue;
1027
1028 for (i = 0; i < sband->n_channels; i++) {
1029 c = &sband->channels[i];
1030
1031 if (!(c->flags & IEEE80211_CHAN_RADAR))
1032 continue;
1033
1034 if (c->dfs_state != NL80211_DFS_UNAVAILABLE &&
1035 c->dfs_state != NL80211_DFS_AVAILABLE)
1036 continue;
1037
1038 if (c->dfs_state == NL80211_DFS_UNAVAILABLE) {
1039 time_dfs_update = IEEE80211_DFS_MIN_NOP_TIME_MS;
1040 radar_event = NL80211_RADAR_NOP_FINISHED;
1041 } else {
1042 if (regulatory_pre_cac_allowed(wiphy) ||
1043 cfg80211_any_wiphy_oper_chan(wiphy, c))
1044 continue;
1045
1046 time_dfs_update = REG_PRE_CAC_EXPIRY_GRACE_MS;
1047 radar_event = NL80211_RADAR_PRE_CAC_EXPIRED;
1048 }
1049
1050 timeout = c->dfs_state_entered +
1051 msecs_to_jiffies(time_dfs_update);
1052
1053 if (time_after_eq(jiffies, timeout)) {
1054 c->dfs_state = NL80211_DFS_USABLE;
1055 c->dfs_state_entered = jiffies;
1056
1057 cfg80211_chandef_create(&chandef, c,
1058 NL80211_CHAN_NO_HT);
1059
1060 nl80211_radar_notify(rdev, &chandef,
1061 radar_event, NULL,
1062 GFP_ATOMIC);
1063
1064 regulatory_propagate_dfs_state(wiphy, &chandef,
1065 c->dfs_state,
1066 radar_event);
1067 continue;
1068 }
1069
1070 if (!check_again)
1071 next_time = timeout - jiffies;
1072 else
1073 next_time = min(next_time, timeout - jiffies);
1074 check_again = true;
1075 }
1076 }
1077 rtnl_unlock();
1078
1079 /* reschedule if there are other channels waiting to be cleared again */
1080 if (check_again)
1081 queue_delayed_work(cfg80211_wq, &rdev->dfs_update_channels_wk,
1082 next_time);
1083}
1084
1085
1086void __cfg80211_radar_event(struct wiphy *wiphy,
1087 struct cfg80211_chan_def *chandef,
1088 bool offchan, gfp_t gfp)
1089{
1090 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1091
1092 trace_cfg80211_radar_event(wiphy, chandef, offchan);
1093
1094 /* only set the chandef supplied channel to unavailable, in
1095 * case the radar is detected on only one of multiple channels
1096 * spanned by the chandef.
1097 */
1098 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
1099
1100 if (offchan)
1101 queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
1102
1103 cfg80211_sched_dfs_chan_update(rdev);
1104
1105 nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
1106
1107 memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def));
1108 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
1109}
1110EXPORT_SYMBOL(__cfg80211_radar_event);
1111
1112void cfg80211_cac_event(struct net_device *netdev,
1113 const struct cfg80211_chan_def *chandef,
1114 enum nl80211_radar_event event, gfp_t gfp,
1115 unsigned int link_id)
1116{
1117 struct wireless_dev *wdev = netdev->ieee80211_ptr;
1118 struct wiphy *wiphy = wdev->wiphy;
1119 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1120 unsigned long timeout;
1121
1122 if (WARN_ON(wdev->valid_links &&
1123 !(wdev->valid_links & BIT(link_id))))
1124 return;
1125
1126 trace_cfg80211_cac_event(netdev, event, link_id);
1127
1128 if (WARN_ON(!wdev->links[link_id].cac_started &&
1129 event != NL80211_RADAR_CAC_STARTED))
1130 return;
1131
1132 switch (event) {
1133 case NL80211_RADAR_CAC_FINISHED:
1134 timeout = wdev->links[link_id].cac_start_time +
1135 msecs_to_jiffies(wdev->links[link_id].cac_time_ms);
1136 WARN_ON(!time_after_eq(jiffies, timeout));
1137 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
1138 memcpy(&rdev->cac_done_chandef, chandef,
1139 sizeof(struct cfg80211_chan_def));
1140 queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
1141 cfg80211_sched_dfs_chan_update(rdev);
1142 fallthrough;
1143 case NL80211_RADAR_CAC_ABORTED:
1144 wdev->links[link_id].cac_started = false;
1145 break;
1146 case NL80211_RADAR_CAC_STARTED:
1147 wdev->links[link_id].cac_started = true;
1148 break;
1149 default:
1150 WARN_ON(1);
1151 return;
1152 }
1153
1154 nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
1155}
1156EXPORT_SYMBOL(cfg80211_cac_event);
1157
1158static void
1159__cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
1160 struct wireless_dev *wdev,
1161 const struct cfg80211_chan_def *chandef,
1162 enum nl80211_radar_event event)
1163{
1164 struct wiphy *wiphy = &rdev->wiphy;
1165 struct net_device *netdev;
1166
1167 lockdep_assert_wiphy(&rdev->wiphy);
1168
1169 if (!cfg80211_chandef_valid(chandef))
1170 return;
1171
1172 if (!rdev->background_radar_wdev)
1173 return;
1174
1175 switch (event) {
1176 case NL80211_RADAR_CAC_FINISHED:
1177 cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
1178 memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef));
1179 queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
1180 cfg80211_sched_dfs_chan_update(rdev);
1181 wdev = rdev->background_radar_wdev;
1182 break;
1183 case NL80211_RADAR_CAC_ABORTED:
1184 if (!cancel_delayed_work(&rdev->background_cac_done_wk))
1185 return;
1186 wdev = rdev->background_radar_wdev;
1187 break;
1188 case NL80211_RADAR_CAC_STARTED:
1189 break;
1190 default:
1191 return;
1192 }
1193
1194 netdev = wdev ? wdev->netdev : NULL;
1195 nl80211_radar_notify(rdev, chandef, event, netdev, GFP_KERNEL);
1196}
1197
1198static void
1199cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
1200 const struct cfg80211_chan_def *chandef,
1201 enum nl80211_radar_event event)
1202{
1203 guard(wiphy)(&rdev->wiphy);
1204
1205 __cfg80211_background_cac_event(rdev, rdev->background_radar_wdev,
1206 chandef, event);
1207}
1208
1209void cfg80211_background_cac_done_wk(struct work_struct *work)
1210{
1211 struct delayed_work *delayed_work = to_delayed_work(work);
1212 struct cfg80211_registered_device *rdev;
1213
1214 rdev = container_of(delayed_work, struct cfg80211_registered_device,
1215 background_cac_done_wk);
1216 cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
1217 NL80211_RADAR_CAC_FINISHED);
1218}
1219
1220void cfg80211_background_cac_abort_wk(struct work_struct *work)
1221{
1222 struct cfg80211_registered_device *rdev;
1223
1224 rdev = container_of(work, struct cfg80211_registered_device,
1225 background_cac_abort_wk);
1226 cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
1227 NL80211_RADAR_CAC_ABORTED);
1228}
1229
1230void cfg80211_background_cac_abort(struct wiphy *wiphy)
1231{
1232 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1233
1234 queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
1235}
1236EXPORT_SYMBOL(cfg80211_background_cac_abort);
1237
1238int
1239cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
1240 struct wireless_dev *wdev,
1241 struct cfg80211_chan_def *chandef)
1242{
1243 unsigned int cac_time_ms;
1244 int err;
1245
1246 lockdep_assert_wiphy(&rdev->wiphy);
1247
1248 if (!wiphy_ext_feature_isset(&rdev->wiphy,
1249 NL80211_EXT_FEATURE_RADAR_BACKGROUND))
1250 return -EOPNOTSUPP;
1251
1252 /* Offchannel chain already locked by another wdev */
1253 if (rdev->background_radar_wdev && rdev->background_radar_wdev != wdev)
1254 return -EBUSY;
1255
1256 /* CAC already in progress on the offchannel chain */
1257 if (rdev->background_radar_wdev == wdev &&
1258 delayed_work_pending(&rdev->background_cac_done_wk))
1259 return -EBUSY;
1260
1261 err = rdev_set_radar_background(rdev, chandef);
1262 if (err)
1263 return err;
1264
1265 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, chandef);
1266 if (!cac_time_ms)
1267 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
1268
1269 rdev->background_radar_chandef = *chandef;
1270 rdev->background_radar_wdev = wdev; /* Get offchain ownership */
1271
1272 __cfg80211_background_cac_event(rdev, wdev, chandef,
1273 NL80211_RADAR_CAC_STARTED);
1274 queue_delayed_work(cfg80211_wq, &rdev->background_cac_done_wk,
1275 msecs_to_jiffies(cac_time_ms));
1276
1277 return 0;
1278}
1279
1280void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev)
1281{
1282 struct wiphy *wiphy = wdev->wiphy;
1283 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
1284
1285 lockdep_assert_wiphy(wiphy);
1286
1287 if (wdev != rdev->background_radar_wdev)
1288 return;
1289
1290 rdev_set_radar_background(rdev, NULL);
1291 rdev->background_radar_wdev = NULL; /* Release offchain ownership */
1292
1293 __cfg80211_background_cac_event(rdev, wdev,
1294 &rdev->background_radar_chandef,
1295 NL80211_RADAR_CAC_ABORTED);
1296}
1297
1298int cfg80211_assoc_ml_reconf(struct cfg80211_registered_device *rdev,
1299 struct net_device *dev,
1300 struct cfg80211_ml_reconf_req *req)
1301{
1302 struct wireless_dev *wdev = dev->ieee80211_ptr;
1303 int err;
1304
1305 lockdep_assert_wiphy(wdev->wiphy);
1306
1307 err = rdev_assoc_ml_reconf(rdev, dev, req);
1308 if (!err) {
1309 int link_id;
1310
1311 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS;
1312 link_id++) {
1313 if (!req->add_links[link_id].bss)
1314 continue;
1315
1316 cfg80211_ref_bss(&rdev->wiphy, req->add_links[link_id].bss);
1317 cfg80211_hold_bss(bss_from_pub(req->add_links[link_id].bss));
1318 }
1319 }
1320
1321 return err;
1322}
1323
1324void cfg80211_mlo_reconf_add_done(struct net_device *dev,
1325 struct cfg80211_mlo_reconf_done_data *data)
1326{
1327 struct wireless_dev *wdev = dev->ieee80211_ptr;
1328 struct wiphy *wiphy = wdev->wiphy;
1329 int link_id;
1330
1331 lockdep_assert_wiphy(wiphy);
1332
1333 trace_cfg80211_mlo_reconf_add_done(dev, data->added_links,
1334 data->buf, data->len);
1335
1336 if (WARN_ON(!wdev->valid_links))
1337 return;
1338
1339 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
1340 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
1341 return;
1342
1343 /* validate that a BSS is given for each added link */
1344 for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
1345 struct cfg80211_bss *bss = data->links[link_id].bss;
1346
1347 if (!(data->added_links & BIT(link_id)))
1348 continue;
1349
1350 if (WARN_ON(!bss))
1351 return;
1352 }
1353
1354 for (link_id = 0; link_id < ARRAY_SIZE(data->links); link_id++) {
1355 struct cfg80211_bss *bss = data->links[link_id].bss;
1356
1357 if (!bss)
1358 continue;
1359
1360 if (data->added_links & BIT(link_id)) {
1361 wdev->links[link_id].client.current_bss =
1362 bss_from_pub(bss);
1363
1364 memcpy(wdev->links[link_id].addr,
1365 data->links[link_id].addr,
1366 ETH_ALEN);
1367 } else {
1368 cfg80211_unhold_bss(bss_from_pub(bss));
1369 cfg80211_put_bss(wiphy, bss);
1370 }
1371 }
1372
1373 wdev->valid_links |= data->added_links;
1374 nl80211_mlo_reconf_add_done(dev, data);
1375}
1376EXPORT_SYMBOL(cfg80211_mlo_reconf_add_done);
Linux 6.x block layer and io_uring tree(s)